The sides were bowed ware the two sides went together to the centerpiece. One side had about a three eights inch gap the other side had about a half inch gap and that was with the top and the bottom of the right and left side touching the top and the bottom of the centerpiece. Checking the corners with a carpenter square there was not one of the three pieces that were square. I wound up putting wood screws through the center to pull the gaps together and only used four of the six Wall supports to hold the picture to the wall. With it fixed it really does look excellent￼￼￼.